diff --git a/tests/agent/tier1-command.ts b/tests/agent/tier1-command.ts
new file mode 100644
index 0000000..d76fd4f
--- /dev/null
+++ b/tests/agent/tier1-command.ts
@@ -0,0 +1,119 @@
+import { mkdir, writeFile, readFile, rename } from "node:fs/promises";
+import { join } from "node:path";
+import type { RuneConfig, DocumentConfig } from "../../src/types.ts";
+import type { AgentRunner, AgentResult } from "./runner.ts";
+import { getChangeDir, getArchiveDir } from "../../src/core/config.ts";
+import { parseTasks } from "../../src/core/task-parser.ts";
+
+export class CommandLevelRunner implements AgentRunner {
+  readonly tier = 1;
+
+  async runPlan(
+    projectDir: string,
+    changeName: string,
+    docName: string,
+    config: RuneConfig,
+  ): Promise<AgentResult> {
+    const changeDir = getChangeDir(projectDir, changeName);
+    await mkdir(changeDir, { recursive: true });
+
+    const planStage = config.stages.plan;
+    if (!planStage) {
+      throw new Error("plan 阶段未配置");
+    }
+
+    const docConfig = planStage.documents.find((d) => d.name === docName);
+    if (!docConfig) {
+      throw new Error(`文档 "${docName}" 未在 plan.documents 中配置`);
+    }
+
+    const content = this.renderDocument(docConfig, changeName);
+    const filePath = join(changeDir, `${docName}.md`);
+    await writeFile(filePath, content);
+
+    return { files: [`${docName}.md`] };
+  }
+
+  async runBuild(
+    projectDir: string,
+    changeName: string,
+    _config: RuneConfig,
+  ): Promise<AgentResult> {
+    const changeDir = getChangeDir(projectDir, changeName);
+    const taskPath = join(changeDir, "task.md");
+
+    let taskContent: string;
+    try {
+      taskContent = await readFile(taskPath, "utf-8");
+    } catch {
+      throw new Error(`变更 "${changeName}" 的 task.md 不存在，请先完成规划`);
+    }
+
+    const tasks = parseTasks(taskContent);
+    const pending = tasks.filter((t) => !t.checked);
+
+    if (pending.length === 0) {
+      return { files: [] };
+    }
+
+    const files: string[] = [];
+    for (const task of pending) {
+      const oldLine = `- [ ] ${task.text}`;
+      const newLine = `- [x] ${task.text}`;
+      taskContent = taskContent.replace(oldLine, newLine);
+      const implFile = `${task.text
+        .replace(/[^a-zA-Z\u4e00-\u9fa5]+/g, "-")
+        .replace(/^-|-$/g, "")
+        .toLowerCase()}.ts`;
+      await writeFile(join(changeDir, implFile), `// ${task.text}\n`);
+      files.push(implFile);
+    }
+
+    await writeFile(taskPath, taskContent);
+    files.push("task.md");
+
+    return { files };
+  }
+
+  async runArchive(
+    projectDir: string,
+    changeName: string,
+    _config: RuneConfig,
+  ): Promise<AgentResult> {
+    const changeDir = getChangeDir(projectDir, changeName);
+    const taskPath = join(changeDir, "task.md");
+
+    try {
+      const taskContent = await readFile(taskPath, "utf-8");
+      const tasks = parseTasks(taskContent);
+      const pending = tasks.filter((t) => !t.checked);
+
+      if (pending.length > 0) {
+        throw new Error(`变更 "${changeName}" 存在 ${pending.length} 个未完成任务，无法归档`);
+      }
+    } catch (e) {
+      if (e instanceof Error && e.message.includes("未完成任务")) {
+        throw e;
+      }
+    }
+
+    const today = new Date().toISOString().slice(0, 10);
+    const archiveDir = getArchiveDir(projectDir);
+    await mkdir(archiveDir, { recursive: true });
+    const dest = join(archiveDir, `${today}-${changeName}`);
+    await rename(changeDir, dest);
+
+    return { files: [] };
+  }
+
+  private renderDocument(doc: DocumentConfig, changeName: string): string {
+    if (doc.template) {
+      return doc.template.replace(/\{\{change-name\}\}/g, changeName) + "\n";
+    }
+    return `# ${doc.name}\n\n${doc.prompt}\n`;
+  }
+}
+
+export function createRunner(): AgentRunner {
+  return new CommandLevelRunner();
+}